Martim Moniz was a famous noble man who, as legend goes, saved the castle of Lisbon from Moorish occupation during the Reconquista of 1147, by offering his life as he lodged his body in the heavy castle doors disabling the Moors from closing it, giving the Christian soldiers time to arrive and reconquer the castle at the birth of the nation of Portugal.
The Martim Moniz square is named after this solder and for many years it was a slighty downtrodden neglected area in down town Lisbon.
Since a couple of years it has been completely rehabilitated and is now a popular square with restaurants, food stands, bars and music with an emphasis on the multi cultural aspect that typify this area, for people relaxing and lounging in the centre of Lisbon.
It has various activities for children and places for football or sport. it is within walking distance of the Praca do Comércio and it has it own metro station called the Martim Moniz metro station.